Measurements

• International cost management standards

  +worldwide use

  +improves decision making

  +lowers risks

  +collaboration
• RIBA plan of work stages

  0- strategic definition 1- preperation & brief 2- concept design 3- coordination 4- technical design 5- manufacturing + construction 6- handover 7- use
• New Rules of management are standardised measurement rules for; estimating costs, planning, procurement
• NRM advantages

  +consistency

  +higher accuracy of cost estimates

  +lower risks of disputes
• NRM1 is cost estimates+ planning for capital works
• NRM2 is detailed measurement
• NRM3 is cost estimating and planning for maintenance work
• Measurements from a building are used in a Bill of Quantities consisting of; number of each item, rate, units, total costs
• Unit rates include;

  cost of labour + time

  plant + time

  wasteage

  overhead and profit

  cost of material + amount
• Unit rates matter to contractors to cover their work and bring in profit
• Unit rates matter to designers because they influence choice of materials
• Unit rates matter to the project manager so they can allocate resources and time needed
• Unit rates matter to the site engineer so price and quantity remains in budget
• Interim valuations are used to assess the work done (value+quality) in a certain time
• Retention

  • 3%-5%
  • Financial security for client to ensure that they get what they pay for
  • Half paid upon completion
  • other half retained for 12 months known as defect liability period - interest can be earned
• Tolerances are allowable variations between specified measurements and actual measurements